What is used to adsorb the poisonous gas obtained from the coal mine?

What is the difference between physisorption and chemisorption?

Aqueous solution of raw sugar when passed over beds of animal charcoal,it becomes colourless. Pick the correct set of terminologies (Adsorbent,Adsorbate,Process) that can be used for the above example.

In physical adsorption,the gas molecules are held on a solid surface by

According to the Langmuir adsorption isotherm,at high pressure,the amount of gas adsorbed is .......

Identify the example of sorption from the following.